JP2936139B2 - Electrical equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an electric device that easily generates noise when used, such as an electric shaver, a pill catcher, and a hair clipper, and particularly includes an operation state detecting unit. About.

[Prior Art] Conventionally, this type of electric equipment generally displays a display corresponding to a detection content such as a state of accumulation of shavings visually using an LED or a liquid crystal.

However, the visual display method is inconvenient in that it is necessary to always pay attention to the display portion.

In response to such inconveniences, there have been proposed ones in which the volume or sound quality of the buzzer is changed in a plurality of steps, and various states of the electric device can be distinguished and notified by a plurality of kinds of words by voice synthesis.

[Problems to be Solved by the Invention] However, in a motor having a large fluctuation in load current such as a motor load, a fluctuation in battery voltage is inevitable. When a buzzer sounds using such a voltage, a change in sound volume or sound quality occurs. It is difficult to distinguish and display, and in the display by voice synthesis, the display quality is inferior, for example, the generated voice sounds wavy. Further, there are many problems with electrical equipment that emits noise such as an electric razor, for example, making it difficult to hear the notification by sound itself.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an electric device capable of displaying a sound with excellent display quality.

It is another object of the present invention to provide an electric device capable of performing an accurate detection operation by performing the detection operation after the load is stopped.

[Means for Solving the Problems] As shown in a schematic configuration in FIG. 1, an electric apparatus according to the present invention includes a main load 51 capable of collecting shavings, and a main power supply means for the load 51 for the load 51. And a switch 5 for supplying power to the load 51 from the power source 52 and enabling ON / OFF regulation of the starting time.
A switch detecting means for detecting an operation state of the switch 5, a load detecting means for generating a signal corresponding to a state of collecting shavings in the load 51, and a signal corresponding to an output signal from the load detecting means. Display means for performing a sounding operation of the content.

Further, the load detection means and the display means are connected to the power supply 52 and the switch detection means detect that the switch 5 is turned off. The detection operation by the means and the sound generation operation by the display means are performed.

The load detecting means includes a light-emitting unit, a light-receiving unit that receives light emitted from the light-emitting unit and converts the light into an electric signal, and a shaving chamber having a slanting face for shavings. In addition to being vertically separated, the optical axis between the light emitting unit and the light receiving unit can be configured to be substantially parallel to the pool surface.

[Operation] With the above configuration, when the switch 5 is turned on, power is supplied from the power supply 52, and the load 51 performs a predetermined operation.

Here, a signal is sent from the switch detecting means to the load detecting means in conjunction with turning off the switch 5. Then, a signal corresponding to the content detected by the load detection unit is sent to the display unit, and the display unit performs sound display in a stable state in which the load 51 is stopped.

When the load is capable of collecting the shavings, the load starts the detecting operation after stopping the collecting operation, so that there is no unstable element such as a whirlwind at the time of collecting, and the shavings are in a stable state. Because of the stay, the detection of the shavings is also performed stably, and this detection state is appropriately displayed on the display means.

If the shaving detector is provided with an inclined shaving and the amount of shaving is detected based on the light transmittance, a signal corresponding to the amount of shaving can be taken out and a step display can be performed.

[Embodiment] Hereinafter, the present invention will be described with an example in which the present invention is applied to an electric shaver shown in FIGS. 2 to 5, but the present invention is not limited to this, and it is needless to say that the present invention can be applied to various electric appliances in substantially the same manner. .

As shown in FIG. 2, an electric shaver 1 embodying the present invention has an outer cutter and an outer cutter 3 on an upper part of a main body case 2.
An inner blade 4 which is slid and shifted inside the body constitutes a means for collecting shavings, a main switch 5 is provided on the front side of the main body case 2, and a power plug for charging is provided at a lower position of the main body case 2. 6, the electric circuit shown in FIG. 3 is housed inside the main body case 2.

The electric circuit is powered by a rechargeable battery 7 such as a NiCd battery,
By energizing the rechargeable battery 7 to the motor 8 via the main switch 5, the inner blade 4 connected to the motor 8 is driven back and forth to perform a basic operation as the electric shaver 1.

An electric shaver 1 embodying the present invention has, in addition to the basic configuration described above, a charging unit 10 that enables charging of a rechargeable battery 7 and motor driving by a commercial AC power supply, and a motor 8 that controls an applied voltage to the motor 8. A motor control unit 11 for maintaining a constant rotation speed of the motor, a detection unit 12 for detecting a state of each unit and generating a signal corresponding to the detection content, and a detection unit 12
And a display unit 13 for performing a display corresponding to the signal output from the control unit.

The charging unit 10 once rectifies the commercial AC power input from the power plug 6 with the rectifier circuit 14,
The charging state is constantly monitored during charging by the charging state detection circuit 20 provided in the detection unit 12, and it is detected that the charging is completed by the detection circuit 20. Then, the oscillating operation of the inverter circuit 15 is limited or stopped to prevent the rechargeable battery 7 from being overcharged. The signal output from the detection circuit 20 is also sent to the display unit 13 at the same time to indicate that charging is completed.

Further, the detecting unit 12 includes a circuit 21 for detecting the discharging state of the rechargeable battery 7 to monitor the terminal voltage of the rechargeable battery 7. When the terminal voltage of the rechargeable battery 7 falls below the set value, a signal is displayed on the display unit 13. To indicate that charging is required.

On the other hand, the rotation speed of the motor 8 is monitored by the motor rotation state detection circuit 22, and when the detection circuit 22 detects that the rotation speed has greatly deviated from the specified value due to a change in load or a drop in battery voltage, Sends a signal to the motor control unit 11,
The control for automatically controlling the motor voltage and maintaining the rotation speed constant works. At the same time, a signal is sent to the display unit 13 to notify the control state of the motor rotation.

As shown in FIG. 4, the display unit 13 enables a display corresponding to the content detected by the detection unit 12 by voice, and a microprocessor (MPU) 30 that controls the operation of the entire display unit 13. A data storage unit 31 that stores data corresponding to a series of sounds to be displayed, a voice synthesis circuit 32 that synthesizes a voice signal from data extracted from the data storage unit 31, and a An output circuit 33 converts the sound wave into an acoustic wave and outputs the sound wave.

The microprocessor 30 includes a central processing unit (CPU), a ROM
Alternatively, it is provided with a RAM and operates in accordance with a program stored in the ROM, and is supplied with power from the rechargeable battery 7 and always in a standby mode in a power saving state of waiting only for a signal input from the detection unit 12. Although it is operating, when the detection signal is input from the detection unit 12, the type of the detection signal is checked, and after performing a predetermined process such as a delay process corresponding to the type, the voice should be synthesized with the voice synthesis circuit 32. At the same time as specifying the type of audio data, a signal is sent to the output circuit 33 to turn on the output circuit 33.

The data storage unit 31 stores data corresponding to a series of voices such as "Please clean the shavings" to be displayed in the output circuit 33.
The data is appropriately extracted from the data storage unit 31 based on the data sent from the data storage unit, and the extracted data is voice-synthesized and converted into a predetermined voice signal.

The output circuit 33 includes a filter circuit 34 that removes high-frequency components from the audio signal, a circuit 35 that amplifies the audio signal, a speaker 36 that converts the audio signal into a sound wave, and a rechargeable battery 7 connected to the amplifier circuit 35 to turn on. The amplifier circuit 35 is always turned off by the switching circuit 37 so as to reduce the power consumption of the entire electric shaver as much as possible.

The present invention, in addition to the above configuration, includes a detecting unit 12 shown in FIG.
In addition, a shaving detecting circuit 40 for detecting the amount of shavings accumulated on the inner side of the outer cutter 3 and a switch detecting circuit 41 for regulating the start timing of the detecting circuit 40 are provided. .

The switch detection circuit 41 detects that the main switch 5 has been turned off, and generates a predetermined signal.
For example, by differentiating the power supply voltage applied to the motor 8 via the main switch 5 and extracting only a pulse signal generated when the switch 5 is turned off by a diode, a trigger signal for starting the shaving detection circuit 40 is provided. Can be formed.

As shown in FIG. 5, the shaving detection circuit 40
Which is disposed inside the outer cutter 3 in the upper part,
A shaving chamber 43 in which shavings 42 accumulate, a light emitting section 45 that generates a light beam 44 having a predetermined luminous intensity when energized, and light emitted from the light emitting section 45
A light receiving unit 46 for converting 44 into an electric signal, and an analog signal output from the light receiving unit 46 being converted into a digital signal, and a display unit 13
And a conversion unit 47 that sends the detection data of the shavings 42 to the MPU 30.

The light emitting unit 45 uses, for example, a light emitting diode, and is energized for a predetermined short time to transmit the light 44 to the light receiving unit 46 in conjunction with the input of the trigger signal from the switch detection circuit 41.

For example, a phototransistor is used as the light receiving unit 45, and generates an electric signal having a magnitude corresponding to the received light intensity.

The lint reservoir 43 is provided at a place where lint 42 is easily accumulated, such as a lower portion of the inner blade 4, and surrounds a lump surface 48 slightly inclined with respect to the horizontal direction with side walls 49 and 50. In addition, the light-emitting portion described above
45 and the light receiving section 46 are disposed separately.

Therefore, the main switch 5 is turned on and the electric shaver 1 is turned on.
When the operation is started, the sliding operation of the outer blade 3 and the inner blade 4 causes the collecting operation of the shavings 42 in the main body case 2 to be performed.
The collected hair filings 42 fall and accumulate in the shavings sump 43,
During the collecting operation of 42, the vibration continues in response to the reciprocating operation of the inner blade 4.

Here, when the switch 5 is turned off, the off operation of the switch 5 is detected by the switch detection circuit 41, and a trigger signal is sent to the shavings detection circuit 40. At the same time, the light emitting unit 45 is turned on to send the light 44 to the light receiving unit 46, and the light receiving unit 46 generates an electric signal of a magnitude corresponding to the transmittance, that is, the accumulation amount of the shavings 42. 4 is completely stopped and the shavings 42
Is also stable, so that accurate detection of shavings is performed. The analog signal output from the light receiving unit 46 is further converted by the conversion unit.
After being converted to a digital signal in 47, it is sent to the display unit 13,
When the display unit 13 determines that the shavings 42 have accumulated above the set value, a display that prompts cleaning is displayed.

In addition, instead of the above-mentioned transmission type for the shaving detection circuit 40, the shaving surface 48 is formed of a mirror, a polished stainless steel plate or a reflecting plate having excellent reflectance such as a white resin plate, and a light emitting unit. It may be configured as a reflection type in which the light beam 44 from 45 is reflected by the shaving surface 48 and detected by the light receiving unit 46.

[Effects of the Invention] As described above, the present invention is configured such that the detection operation of the shavings is performed in a state where the shavings collection operation is completed and the shavings are stable, so that the operation is accurate with a relatively simple configuration. A detection operation can be performed.

Further, by inclining the hair filing surface, a detection signal having a size corresponding to the state of the hair filing is obtained.

In addition, since the display is performed by sound such as voice after the load is stopped, there are many advantages such as a display having an excellent display effect without being affected by noise or voltage fluctuation caused by the operation of the load. Have.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a basic configuration of the present invention. 2 to 5 show an example in which the present invention is applied to an electric shaver, FIG. 2 is a perspective view showing an external shape, FIG. 3 is a block diagram showing an entire configuration of an electric circuit, and FIG. 4 is a display. FIG. 5 is a block diagram showing a configuration of the unit, and FIG. 5 is an explanatory diagram showing a configuration of a shaving detection circuit. 2 ... body case, 5 ... main switch, 7 ... rechargeable battery, 10 ... charging unit, 11 ... motor control unit, 12 ... detection unit, 13 ... display unit, 40 ... shavings detection circuit , 41: Switch detection circuit, 42: Shavings, 45: Light emitting unit, 46: Light receiving unit, 48: Pool surface.

Continuation of front page (56) References JP-A-59-137087 (JP, A) JP-A-55-47419 (JP, A) JP-A-59-141398 (JP, U) JP-A-62-142194 (JP, A) (U, U) Shokai 59-117480 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B26B 19/48 H01M 10/44

Claims (2)

(57) [Claims] 1. A main load (51) enabling collection of shavings.
A power source (52) including a battery as main power supply means for the load (51); and supplying power from the power source (52) to the load (51);
Switch (5) that enables ON / OFF regulation of the starting time
A switch detecting means for detecting an operation state of the switch (5); a load detecting means for generating a signal corresponding to a state of collecting shavings in the load (51); and an output from the load detecting means. The load detecting means and the display means are supplied with power from the power supply (52), and are provided with a switch (5) by the switch detecting means. An electric device, wherein the detection operation by the load detection means and the sound generation operation by the display means are performed in conjunction with the detection of the off operation of (1). 2. The load detecting means includes: a light emitting section (45); a light receiving section (46) for receiving light (44) emitted from the light emitting section (45) and converting the light (44) into an electric signal; The pool surface (48) of the (42) is provided with an inclined hair filing pool (43), and the optical axis between the light emitting unit (45) and the light receiving unit (46) is separated in the vertical direction of the pool surface (48). 2. The electric device according to claim 1, wherein the electric device is arranged substantially parallel to the pool surface.